Hinge pin joint



FIG. 1 is a perspective view of a hinge pin joint design;

FIG. 2 is a front view of the hinge pin joint design;

FIG. 3 is a back view of the hinge pin joint design;

FIG. 4 is a top view of the hinge pin joint design;

FIG. 5 is a bottom view of the hinge pin joint design;

FIG. 6 is a right view of the hinge pin joint design; and,

FIG. 7 is a left view of the hinge pin joint design.

The portions of the hinge pin joint design shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a hinge pin joint, as shown and described. 